I like how you dismiss the speed adjustment factor. Lets assume that the playbooks are similar (though, it's laughable to think his high school playbook was just as complicated as Rich Rods), heres something to consider.
While relative speed may be the same (IE, both teams are going faster) the human brains reaction time does not improve. Certainly a person can improve their reactions, but, there is a limit to how quickly our brain works. In short, regardless of how experienced he may be in high school, the players are going to move faster and his reactions aren't going to be spot on.
Further, you mentioned previously how great they looked in practice, without a live defense. Defense tends to change things.
As for the Henne arguement, you seem to be forgetting his freshman year. He had (arguably) the greatest WR in michigan history, Braylon Edwards, jumping over defenders making grabs for him. He frequently just dropped back and lobbed it up. Under pressure? Throw it to Braylong. 3rd down? Throw it to Braylon.
It was hardly some great feet of quarterbacking.
Err, uh I wouldn't exactly call him a no talent assclown. He was a second round pick. You are correct though, he never improved over his 4 seasons. He was a consistently good college QB, never great.
The weather arguement is silly. What does it really effect? WR's catching? No, they all have gloves. QB's getting the snap? No, they have handwarmers. RBs catching a pitch? Again, no, they have gloves.
Bad footing helps the offense far more than the defense, it's much, much, much more difficult to cover a recevier if you can't plant and drive.
The regular season ends in November, often before the first snow of the year. You might get a cold game, but typically the worst weather you deal with is 40's and rainy Sure, it stinks, but it isn't going to ruin your spread offense.
